LG 42LB5800 - Page 72

D. Function error_ No response in remote controller,
k
Established
Error
t
2014 1 6
Standard Repair Process Detail Technical Manual
P4102
Remote controller operation checking method
k
ey erro
r
<ALL MODELS>
A27
date
Revised
date
symp
t
om
Content
LCD TV
2014
.
1
.
6
FRONT REAR
P4102
1
GND
2
KEY1
3
KEY2
4
+3.5V_ST
③
A Type
B Type
5
GND
6
LOGO/LED_R
7IR
8GND
9
N/A
④
C Type
9
N/A
10 N/A
Checkin
g
order
①
②
g
1, 2. Check IR cable condition between IR & Main board.
3. Check the st-by 3.5V on the terminal 6.
4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog
Tester needle moves slowly, and defective when it does not move at all.
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